Mounting of antenna masts



Feb. 14, 1956 CQHN MOUNTING OF ANTENNA MASTS INVENTOR. MAX COHN M A Filed April 27, 1953 A TTORNEY United States Patent MOUNTING 0F ANTENNA MASTS Max Cohn, South River, N. J., assignor to South River Metal Products Company,,lnc., a corporation of New Jersey Application April 27, 1953, Serial No. 351,241

4 Claims. (Cl. 248-43) This invention relates to the mounting of masts, especially antenna masts and permits mounting by relatively inexperienced help or by the householder or amateur itself, with a minimum of skill and force, instructions and instruents- One of the objects of the invention is to provide a holder permitting support of the mast in two predetermined positions, one in which the mast is horizontal so that the antenna or any other device supported on the mastis accessible, and another position which is vertical and inwhich the mast is in operation or ready for use.

It is another object of the invention to provide a mast or mast holder of more or less standard construction with circumferential means attached or attachable thereto which are guided by a corresponding bracket to assume selectively either a horizontal or a verticalv position.

A more specific object of the invention is to provide one more guiding plate for the mast or mast holder, with guiding slots arranged thereto and adapted to receive guiding. pins arranged on the mast or mast holders so as. to permit the mast to be turnable by about 90 degrees upward or downward and thereby capable to assume a nonoperative horizontal or an operativevertical position.

It is afurther specific object of the invention to provide a rotatable mast or mastholder whereby, or in the course of rotation in a vertical plane the mast or mastholder is guided to move vertically in itself upward or downward to assume its fixed position in which the mast is operative.

In a specific embodiment rotation in opposite directions by about 90 degrees is followed by a parallel movement in opposite directions to bring the shaft in the required operative vertical or non-operativehorizontal position, as thecase maybe.

These and other objects of the. invention will be more fully understood from the. drawings. annexed herewith in whichFig. 1 showsamastholder. supported in accordance with certainprinciples. of the invention, shown in perspective view.

Fig. 2; shows a modification of Fig.1.

Fig. 3 shows a cross section view taken through 3-3 of Fig, 1,.

Fig. 4 represents. a fragmentary section view taken through,4.4; of Fig. 3.,

In Fig. 1 mastholder 1 is of tubular shape provided with two fixation screws 2, 3, which serve to secure the mast, attached to or insertable into tube 1 as schematically indicated at 4.

Mastholder is supported on a pair of guiding plates 5,

" 6, which present the side walls of a U-shaped member 7,

the cross wall 8 of which is attached over extensions 9, 10, 11, 12 to supporting brackets 13, 14, having openings 15, 16 and arranged to be fitted over a roof portion, schematically indicated at 17.

Mastholder 1 is provided with a pair of guiding elements or pins on diametrical portions thereof and arranged vertically one above the other in the form of guiding pins or screws 18, 19 extending diametrically through mastholder 1 and supported respectively in guiding slots provided in side walls 5, 6, of U-shaped bracket 7.

In accordance with this invention each of side walls 5, 6-has substantially three guiding slots; one slot which is a quarter-circularly shaped guiding slot 20 extends at its upper end into a short vertical guiding slot 21. These guiding slots in both side walls 5, 6 respectively serve to guide one of the guiding bolts, for example, as shown, upper guiding bolt 18 of mastholder 1 at opposite ends thereof.

The lower guiding bolt 19 is guided by another, separate and somewhat longer vertical guiding slot '22 in each of side walls 5, 6 which engages the opposite ends of the lower guiding pin or bolt 19.

Guiding. slots 20, 21, 22 are so arranged that they support the mastholder 1 selectively in two predetermined positions; a horizontal position which is shown in Fig, l in dotted line and in which the upper pin or bolt 18 of mastholder. I is resting with its opposite ends at the lower end of quarter-circularly shaped guiding slot 20, while the lower guiding pin or member 19 is supported by the upper end'of the lower vertical guiding slot 29. In this position therefore of mastholder 1, it will be possible for the user to approach the antenna or any. other member supported on the. mast.

In this position it is also possible to secure the guiding arrangement by tightening screw nuts 23, 24.

When itis desired to place the mast or mastholder 1 in itsoperative or use position, it is only necessary to turn mastholder 1 by about degrees until it becomes vertical under the control of guiding pins 18, 19 in slots 20, 21, 22 respectively.

During this turning movement of mastholder 1, the upper guiding pin 18 under control of quarter-circular guiding s1ot.20,' will approach the upper endof quartercircular slot 20 and in this position will fall downward into the vertical guiding slot 21 which forms a direct extension of the quarter-circular guiding slot 29.

Simultaneously the lower guiding pin 19 will move under control of the turning movement of mastholder 1 downward and after. the movement is finished this. lower guiding pin 19 will rest at the bottom of the lower vertical guiding slot 22, while the upper guiding pin 18 will-rest on the bottom of the highervertical, guiding slot. 21.

It is apparent that in this position the mastholder 1 cannot be moved in any other direction except by moving it against gravity, i. e. upward, which of course is unusual in the course of ordinary circumstances. In addition itis also possible to secure the vertical mastholder 1 in itsivertical position. by simply tightening nuts 23, -24 provided at the end of guiding pins 18, 19.

In order to. move mastholder 1 and the mast supported thereon out. of its operative vertical position and into a non-operative horizontalposition, it is only necessary to untighten or loosen screw nuts 23, 24 and slightly lift mastholder 1 upward until the upper guiding pin 20 is .in line with the quartencircumferential guiding slotsltlprovidedatboth sides of the bracket. In this position a slight inclination of mastholder 1 will permit the entire mast to be tilted from its vertical position into a horizontal position, a movement which is limited by the bottom end of circumferential slot 243' engaging the end of upper guiding pin 18 and by the top of lower vertical slot 21 engaging the end of lower guiding pin 19.

In the modification of Fig. 2 there is only one guiding plate 25, supporting the mast 26 directly under the control of two guiding pins 27, 28 engaging guiding slots 29, 30, 31 in a manner similar to that described with respect to Fig. 1.

From the foregoing it will be appreciated that there is provided in accordance with the present invention a mount for supporting an antenna comprising a pair of upright walls formed with first slots each including a downwardly concave arcuate section extending from a lower end to an upper end and a vertical section extending from a lower end upwardly into communication with the upper end of said arcuate section, said pair of upright walls being formed with second slots in alignment respectively with and below said vertical sections of said first slots, a mast holder disposed between said upright walls, a first mounting pin operatively connected to said mast holder and extending into and being guided by said first slots, a second mounting pin operatively connected to said mast holder and extending into and being guided by said second slots, said pin and slot connections mounting said mast holder for movement to an unlocked limit position, each of said mounting pins including a head and a threaded end, and a nut on the threaded end of each of said mounting pins for releasably securing each of said mounting pins to said upright walls.

The invention is not limited to the particular type of attachment of the mast or mastholder or to the specific formation of the guiding slots and to the construction of the bracket containing the guiding slots; nor is it applicable only as a haltering of the guiding bracket such as shown and illustrated; it may be applied in any other manner without departing from the scope of this disclosure.

I claim:

1. A mount for supporting a mast holder comprising a pair of parallel upright walls receiving said mast holder therebetween and each formed with a downwardly concave first slot including an arcuate section extending from a lower end to an upper end and a vertical section extending from a lower end upwardly into communication with the upper end of said arcuate section, said walls each being formed with a second slot in alignment with and below said vertical section of said first slot, the upper end of said second slot terminating at a location spaced from the lower end of said vertical section, a first mounting pin operatively connected to said mast holder and having end portions extending into and guided by said first slots, and a second mounting pin spaced from said first mounting pin and operatively connected to said mast holder, said second mounting pin having end portions extending into and being guided by said second slots, said pin and slot connections mounting said mast holder for movement between an unlocked limit position wherein said first mounting pin is at the lower end of said arcuate section of said first slots and said second mounting pin is at the upper end of said second slots and a locked limit position wherein said first mounting pin is at the lower end of said vertical sections of said first slot and said second mounting pin is at the lower end of said second slot.

2. A mount for supporting an antenna comprising a pair of upright Walls formed with first slots each including a downwardly concave arcuate section extending from a lower end to an upper end and a vertical section extending from a lower end upwardly into communication with the upper end of said arcuate section, said pair of upright walls each being formed with a second slot in alignment with and below said vertical section of said first slot, a mast holder, a first mounting pin operatively connected to said mast holder and extending into and guided by each of said first slots, a second mounting pin spaced from said first mounting pin and operatively connected to said mast holder, said second mounting pin extending into and being guided by each of said second slots, said pin and slot connections mounting said mast holder for movement to an unlocked limit position, and means for securing said mount to a support.

3. A bracket for supporting an antenna comprising a pair of upright walls arranged in spaced relation, each of said Walls being formed with a first slot including a downwardly concave arcuate section extending from a lower end to an upper end and a vertical section extending from a lower end upwardly into communication with the upper end of said arcuate section, each of said walls being formed with a second slot in alignment with and below said vertical section of said first slot, a mast holder, a first mounting pin operatively connected to said mast holder and extending into and guided by each of said first slots, a second mounting pin spaced from said first mounting pin and operatively connected to said mast holder, said second mounting pin extending into and being guided by each of said second slots, means operatively connected to at least one of said mounting pins for releasably fixing said mast holder in a fixed position relative to said pair of upright walls, and means for securing said bracket to a support.

4. A mount for supporting an antenna comprising a pair of upright walls formed with first slots each including a downwardly concave arcuate section extending from a lower end to an upper end and a vertical section extending from a lower end upwardly into communication with the upper end of said arcuate section, said pair of upright walls being formed with second slots in alignment respectively with and below said vertical sections of said first slots, a mast holder disposed between said upright walls, a first mounting pin operatively connected to said mast holder and extending into and being guided by said first slots, a second mounting pin operatively connected to said mast holder and extending into and being guided by said second slots, said pin and slot connections mounting said mast holder for movement to an unlocked limit position, each of said mounting pins including a head and a threaded end, and a nut on the threaded end of each of said mounting pins for releasably securing each of said mounting pins to said upright walls.

References Cited in the file of this patent UNITED STATES PATENTS 136,659 Lovell Mar. 11, 1873 220,499 Seymour et al Oct. 14, 1879 1,468,161 Laystrom Sept. 18, 1923 1,672,625 Rose June 5, 1928 1,935,246 Kirsch Nov. 14, 1933 2,372,544 Borman et al Mar. 27, 1945 2,403,479 Bryers July 9, 1946 2,470,528 Sims May 17, 1949 2,611,566 Landis Sept. 23, 1952 2,628,807 Lincoln Feb. 17, 1953 2,632,616 Heistand Mar. 24, 1953 2,667,317 Trebules Jan. 26, 1954 

